3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $a = false; $b = ''; $c = 0; $d = []; $a['x']; $b['x']; $c['x']; $d['x'];
Output for 5.4.0 - 7.1.0
Warning: Illegal string offset 'x' in /in/DJnLm on line 8 Notice: Uninitialized string offset: 0 in /in/DJnLm on line 8 Notice: Undefined index: x in /in/DJnLm on line 10
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.3.29
Parse error: syntax error, unexpected '[' in /in/DJnLm on line 5
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.4.1, 5.0.0 - 5.0.5
Parse error: parse error, unexpected '[' in /in/DJnLm on line 5
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/DJnLm on line 5
Process exited with code 255.